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1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce - Copyright (C) 2004-2009 Internet Systems Consortium, Inc. ("ISC")
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce - Copyright (C) 2000-2003 Internet Software Consortium.
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce - Permission to use, copy, modify, and/or distribute this software for any
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce - purpose with or without fee is hereby granted, provided that the above
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce - copyright notice and this permission notice appear in all copies.
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce - THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce - REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce - AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce - INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce - PERFORMANCE OF THIS SOFTWARE.
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1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<tr><th colspan="3" align="center">Chapter�8.�Troubleshooting</th></tr>
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<a accesskey="p" href="Bv9ARM.ch07.html">Prev</a>�</td>
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1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<div class="titlepage"><div><div><h2 class="title">
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<a name="Bv9ARM.ch08"></a>Chapter�8.�Troubleshooting</h2></div></div></div>
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2601198">Common Problems</a></span></dt>
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<dd><dl><dt><span class="sect2"><a href="Bv9ARM.ch08.html#id2601204">It's not working; how can I figure out what's wrong?</a></span></dt></dl></dd>
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2601216">Incrementing and Changing the Serial Number</a></span></dt>
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2601301">Where Can I Get Help?</a></span></dt>
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<div class="titlepage"><div><div><h2 class="title" style="clear: both">
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<a name="id2601198"></a>Common Problems</h2></div></div></div>
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce<div class="titlepage"><div><div><h3 class="title">
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce<a name="id2601204"></a>It's not working; how can I figure out what's wrong?</h3></div></div></div>
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce The best solution to solving installation and
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce configuration issues is to take preventative measures by setting
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce up logging files beforehand. The log files provide a
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce source of hints and information that can be used to figure out
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce what went wrong and how to fix the problem.
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<div class="titlepage"><div><div><h2 class="title" style="clear: both">
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<a name="id2601216"></a>Incrementing and Changing the Serial Number</h2></div></div></div>
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce Zone serial numbers are just numbers — they aren't
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce date related. A lot of people set them to a number that
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce represents a date, usually of the form YYYYMMDDRR.
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce Occasionally they will make a mistake and set them to a
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce "date in the future" then try to correct them by setting
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce them to the "current date". This causes problems because
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce serial numbers are used to indicate that a zone has been
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce updated. If the serial number on the slave server is
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce lower than the serial number on the master, the slave
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce server will attempt to update its copy of the zone.
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce Setting the serial number to a lower number on the master
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce server than the slave server means that the slave will not perform
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce updates to its copy of the zone.
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce The solution to this is to add 2147483647 (2^31-1) to the
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce number, reload the zone and make sure all slaves have updated to
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce the new zone serial number, then reset the number to what you want
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce it to be, and reload the zone again.
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<div class="titlepage"><div><div><h2 class="title" style="clear: both">
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<a name="id2601301"></a>Where Can I Get Help?</h2></div></div></div>
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce The Internet Systems Consortium
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce (<acronym class="acronym">ISC</acronym>) offers a wide range
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce of support and service agreements for <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym> servers. Four
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce levels of premium support are available and each level includes
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce support for all <acronym class="acronym">ISC</acronym> programs,
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce significant discounts on products
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce and training, and a recognized priority on bug fixes and
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce non-funded feature requests. In addition, <acronym class="acronym">ISC</acronym> offers a standard
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce support agreement package which includes services ranging from bug
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce fix announcements to remote support. It also includes training in
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym>.
1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce To discuss arrangements for support, contact
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce <a href="mailto:info@isc.org" target="_top">info@isc.org</a> or visit the
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce <acronym class="acronym">ISC</acronym> web page at
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce <a href="http://www.isc.org/services/support/" target="_top">http://www.isc.org/services/support/</a>
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce to read more.
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce<a accesskey="p" href="Bv9ARM.ch07.html">Prev</a>�</td>
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce<td width="40%" align="right">�<a accesskey="n" href="Bv9ARM.ch09.html">Next</a>
8f2a34cc6964a1f80a1434e05315a7ae0bb5774eSimo Sorce<td width="40%" align="left" valign="top">Chapter�7.�<acronym class="acronym">BIND</acronym> 9 Security Considerations�</td>
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1dd679584241a0f9b29072c7eed1c5c5e4a577e4Simo Sorce<td width="40%" align="right" valign="top">�Appendix�A.�Appendices</td>